Questions tagged [domain-name-system]
The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names. Questions involving publicly accessible domains should include the real, Fully Qualified Domain Name (FQDN)
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Windows DNS Server - different response per subnet
I've recently deployed three new Windows Server DCs in a new subnet. Unfortunately I came across this problem, where the new DCs won't respond (at least properly) to DNS requests made by clients on ...
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Website is resolving to wrong IP address for some ISPs only months after DNS changes. What can be the issue?
Our client's website https://www.amplehair.com/ is not working for some users using Optimum and Spectrum ISPs in NY area. For other ISPs the site works correctly. We have found out that if the user (...
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DNS configuration for Apache multisite
I have a friend for whom I set up a website on my publicly-accessible server; however, I'm having a lot of trouble getting DNS to work properly.
I added a file/entry for the new site in /etc/apache2/...
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how to cache dns results to prevent beeing blocked spamassassin sa-update servers
I'm serving my own mail server. Now I have trouble with some backlist providers (f.e. uribl.com, zen.spamhaus.org, validity.com).
I'm getting "ADMINISTRATOR NOTICE: The query to Validity was ...
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Windows DNS Policies do not replicate in AD-integrated zones
In a lab, I'm testing split-horizon (aka split-brain) DNS policies. The policies set on a DC/DNS server do not replicate to other DC/DNS servers.
Is it possible to make them replicate?
The lab has ...
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Hetzner Cloud Server SSL not working unless I use a load balancer [closed]
As the title pretty much states, I've tried setting up an A record to point to my Hetzner Cloud server. This is a nodejs/bunjs server with SSL certificates already active and working but when I setup ...
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Is there a way to measure "dns lookups", I'm getting an error for my SPF record
Basically I have two includes in my SPF record one is bluehost's welcomewebsite.com and the other is google's. We send both from our bluehost webmail and from gmail (via send as through bluehost's ...
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How can I set ACLs on Microsoft DNS records using PowerShell 7
We have thousands of records in our Microsoft DNS servers, and some of them are specific to one department. That department has had ACLs set on their records so that their IT staff can modify their ...
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Postfix/OpenDKIM DKIM Key Verification Failing: "record not found"
I'm setting up DKIM with Postfix and OpenDKIM on my Ubuntu 22.04 server. The email signing appears to work correctly, but verification is failing with the error record not found when using the ...
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Can non-admins create new domain on local DNS from a client computer?
We have a database server and web-dashboard currently accessed using the IP address that we need to access with a DNS name.
I don't have administrative access to the infrastructure. We're ...
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Ubuntu DNS server and TXT records
I have a Ubuntu v22 VM serving as DNS secondary for numerous domains. When querying this server, all domains except 1 respond fine to all queries. The one exception domain responds fine to all record ...
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Why is website not loading on mobile data? Works fine on WiFi
I have a website hosted on GoDaddy servers. It works fine on Wifi, but it doesn't load when connected on mobile data. On T-Mobile data, the following error occurs:
"Error_Connection_Timed_Out&...
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How to make exception on DNS Forwarder for a DNS entry
We have a Windows DNS server and we added a forwarder to pass the DNS lookup of the domain abc.com.
However, we want a single DNS record host1.abc.com to map to a specific IP address that is ...
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DNS re-resolution and failover of TCP connections
I manage some stateless services that work over TCP, and we are working to ensure reliability and recoverability in case of a regional outage. I find that I lack enough understanding about the ...
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DNS is not propagating even after 48 hours
A few days ago, I initiated a transfer of my domain, as Google domain is now transferred and managed by Squarespace. I have updated the DNS zone records in my new registra web portal, changed the ...
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